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Box One Prime 9 Chain, 9 Speed, 126L, DLC Black
Box One Prime 9 Chain, 9 Speed, 126L, DLC Black

Externally, Prime 9 chains have similar dimensions to existing 9 speed chains. This unique geometry allows for thicker side plates than 12 speed … read more

your price $51.99 + ships free

BuyBuyPART NUM 432997
BOX Four Cassette - 8-Speed, 11-42t, Black
BOX Four Cassette - 8-Speed, 11-42t, Black

The BOX Four cassette adapts our Prime 9 philosophy of durability, simplicity, and reliability at a great price point. All cogs are stamped from steel … read more

your price $49.99 + ships free

BuyBuyPART NUM 895399
Box One Stem Locks, 1-1/8", Black
Box One Stem Locks, 1-1/8", Black

Cold forged and fully CNC-machined from a number of high strength aluminum alloys, Box One Stem Locks offer peace of mind and a level of added … read more

your price $39.99 + ships free

BuyBuyPART NUM 136244
BOX One Fork Adaptor Set 20mm to 10mm Black
BOX One Fork Adaptor Set 20mm to 10mm Black

Box One fork adaptors let you run standard 10mm (3/8" axles) in a fork designed for 20mm axles … read more

your price $19.99

BuyBuyPART NUM 121373
Box One Chain Tensioner 10mm x 2 Axle Hole, Red
Box One Chain Tensioner 10mm x 2 Axle Hole, Red

Box One Chain Tensioners are extruded then CNC-machined from 7075 aluminum for an optimal balance of strength and weight A minimalist design … read more

your price $29.99 + ships free

BuyBuyPART NUM 437707
Box Three Air Flow Brake Pads, 70mm, Black/Gray
Box Three Air Flow Brake Pads, 70mm, Black/Gray

With a stiff, one-piece, co-molded design, B3 Air Flow Brake Shoes provide excellent stopping power and are the perfect choice for your next build … read more

your price $10.99

BuyBuyPART NUM 285906
BOX Two Prime 9 Speed Derailleur, X-Wide Cage, Black
BOX Two Prime 9 Speed Derailleur, X-Wide Cage, Black

Prime 9 Technology for less derailleur travel and better chainline, less wear, and improved lifespan Box Two features: Tri-Pack limited slip … read more

StarStarStarStarStar 5 of 5 ( 1 ) 5 of 5 stars ( 1 review )

your price $129.99 + ships free

BuyBuyPART NUM 571632
BOX One Alloy Triple Taper BMX Handlebar, Black
BOX One Alloy Triple Taper BMX Handlebar, Black

Introducing the world`s first tapered and welded, alloy 31.8mm clamp BMX handlebar Box One Alloy Triple Taper Handlebars are stiffer than … read more

your price $89.99

BuyBuyPART NUM 494226
BOX Three Prime 9 Cassette - 9-Speed, 11-46t, Black
BOX Three Prime 9 Cassette - 9-Speed, 11-46t, Black

The Box Three Prime 9 cassette is a great all-around cassette option. All cogs are stamped from steel and subsequently, the larger ones are pinned to … read more

your price $69.99 + ships free

BuyBuyPART NUM 549106
BOX Two Prime 9 Groupset, Single Shift
BOX Two Prime 9 Groupset, Single Shift

Includes cassette, derailleur, shifter and chain Single shift options are for eMTB to keep the user from shifting multiple gears under load … read more

$40 offretail $309.99 your price $269.99 + ships free

BuyBuyPART NUM 562991
Box Components Box Two Chain Tensioner, 10mm, Silver
Box Components Box Two Chain Tensioner, 10mm, Silver

Not too hot, not too cold. Box Two Chain Tensioners let you dial in your chain tension so it`s just right Two mounting holes provide room for ample … read more

your price $16.99

BuyBuyPART NUM 566338
Box Two Small Number Plate, Gun Metal
Box Two Small Number Plate, Gun Metal

Designed by the late Rich Lee for Box, the Box Two Number Plate features color-fast, 3D injection molding, making them some of the most intricate … read more

your price $19.99

BuyBuyPART NUM 849997
BOX BoxTwo Stem Spacer Kit, 1-1/8" - Black
BOX BoxTwo Stem Spacer Kit, 1-1/8" - Black

Super light CNC machined 6061 aluminum spacers for fine-tuning stem height Includes one each 3, 5, 10mm spacers and two each 1mm spacers … read more

your price $9.99

BuyBuyPART NUM 388428
BOX Two Prime 9 Chain 144L - Silver
BOX Two Prime 9 Chain 144L - Silver

Prime 9 Technology for wide range without complexity Wider chain is strong and durable 9 speed chain has outer width of normal 9 speed but a narrower … read more

your price $28.99

BuyBuyPART NUM 453870
BOX Three Prime 9 Wide Multi Shift Group Set, Matte Black
BOX Three Prime 9 Wide Multi Shift Group Set, Matte Black

Wide range 9 speed multi-shift group with up to 3 gears per shift Simple durable performance without all the bells and whistles Includes … read more

your price $199.99 + ships free

BuyBuyPART NUM 116867
Box One Cone Presta Valve Caps, Red
Box One Cone Presta Valve Caps, Red

CNC machined from 6061-T6 aluminum alloy, Box One Valve Caps add a touch of style to any bike Available in anodized red, blue and black with … read more

your price $7.99

BuyBuyPART NUM 839197
Box One Cone Presta Valve Caps, Black
Box One Cone Presta Valve Caps, Black

CNC machined from 6061-T6 aluminum alloy, Box One Valve Caps add a touch of style to any bike Available in anodized red, blue and black with … read more

your price $7.99

BuyBuyPART NUM 662892
BOX Four Narrow/Wide 8 Speed MTB Chainring, 104mm 4-bolt, 32T, Black
BOX Four Narrow/Wide 8 Speed MTB Chainring, 104mm 4-bolt, 32T, Black

Box Four narrow/wide chainring for use with the wide ratio Box Four drivetrain The tooth profile and thicknesses are tailored to match the … read more

your price $24.99

BuyBuyPART NUM 185806
BOX Three Prime 9 X-Wide Single Shift eBike Groupset - Includes X-Wide Rear Derailleur, 11-50t Cassette, Single Shift Shifter, Prime 9 Chain
BOX Three Prime 9 X-Wide Single Shift eBike Groupset - Includes X-Wide Rear Derailleur, 11-50t Cassette, Single Shift Shifter, Prime 9 Chain

Box's Prime 9 Technology is a counter-intuitive philosophy based on the less is more theory. It embraces range without adding complexity. The outcome … read more

your price $214.99 + ships free

BuyBuyPART NUM 158747
BOX Four Single Shift Shifter - 8-Speed, Black
BOX Four Single Shift Shifter - 8-Speed, Black

The BOX Four 8-Speed Shifter takes advantage of the "less is more" drivetrain philosophy and exploits durability, simplicity, and reliability. … read more

your price $31.99

BuyBuyPART NUM 290270

In Store products are available to view in our showroom. In Store orders usually ship the same or next business day.

These models are available for online purchasing and can be shipped directly to you.

Our Lowest Price - This product is ineligible for additional discounts or rebates.

This is the part number or identifier for this item from the manufacturer

Cassette Speeds

Range

Cassette Body Type

Cassette Chain Compatibility

Brake Fit

Pad Use

Post Mount Type

We define color as the main color of the item. It may have accents or highlights in other colors.

The number of speeds should correspond to the number of cogs on the cassette.

Thickness

Bolt Circle Diameter (BCD) is the diameter of an imaginary circle running through the center of the chainring mounting holes. It is always defined in millimeters.

Chainring Teeth

These rings can be used in the inner position.

These rings can be used in the middle position.

These rings can be used in the outer position.

These rings can be used in single ring applications.

These single chain rings have special properties which help retain the chain on the ring.

Buy this product and your entire order ships for free.

Some orders are inelligible for delivery discounts. See offer details for disqualifying products and destinations.